Diabetes in the Real World

Transcription

1 Diabetes in the Real World

2 Diabetes Mellitus Common hormonal disorder of dogs and cats due to insufficient insulin being produced or cells not being able to respond to insulin Results in hyperglycaemia and consequent glucosuria leading to clinical signs of diabetes

3 The Role of Insulin Insulin is a hormone produced by the PANCREAS within Islets of Langerhans by ß-cells. Insulin is released in response to an increase in blood sugar Insulin acts to reduce blood sugar by facilitating glucose movement into cells It also has anabolic effects promoting protein synthesis and fat deposition

4 Diabetic cats aren t the same as diabetic dogs

5 Why? Different causes.. Dogs = Type 1 diabetes most common Auto-immune or idiopathic ß-cell destruction, commonly resulting in absolute deficiency of insulin Cats = Type 2 diabetes most common Combination of insulin resistance and/or impaired insulin secretion

6 Clinical Signs of Diabetes Mellitus Polyuria Polydipsia Polyphagia Brain thinks it is starved Weight loss anabolism to create energy Or Anorexia, vomiting, collapse associated with ketoacidosis

7 Diagnosis of Diabetes Mellitus History & consistent clinical signs Urine glucose +/- ketones C&S Full Bloods Fructosamine HEALTHY DIABETIC Well controlled Poor control >500 Other tests - Cushings - Thyroid Pancreas Acromegaly

8 ASBOh AGE ~ Middle-aged older dogs & cats SEX ~ Entire bitches, neutered male cats BREED PREDISPOSITIONS OBESITY- insulin depletion HORMONES- entire bitches, Cushings

9 Core Treatment Goals Improve quality of life for pet and owner by: Minimising the clinical signs of diabetes Minimising the risk of hypoglycemia Minimising the risk of long term complications by controlling blood glucose - cataracts in dogs -polyneuropathy in cats

10 Management of Diabetes Mellitus Spay- before stabilisation (unless DKA) Treat complicating factors if possible (e.g. Cushings, UTI, dental disease) Diet Exercise Insulin

11 Prescription Diabetic Diets FEED THE ANIMAL IN FRONT OF YOU Dogs Higher fibre = better glycaemic control to reduce post prandial surge dry > wet Cats Higher protein: lower CHO wet > dry BUT cats are Grazers Feed to ideal weight ½ ration at each injection if twice daily dosing

12 First Stabilisation Consult 1) Hand holding 2) Explanation of diabetes at a level client can understand 3) Insulin Storage, Administration, Vetpen/syringes, Needle disposal 4) Signs of HYPOglycaemia 4)Routine- including diet exercise and insulin timings 5) Monitoring at home

13 A Moment to Consider the Owner.. Struggling to handle syringes? Unable to see the dosing line? Or simply scared? A survey published in The Journal of the American Animal Hospital Association said 50% of newly diagnosed diabetic pet owners had fear of injecting.

14 VetPen - the veterinary insulin injection pen

15 Benefits of VetPen Simple to use and less intimidating Easier to use if owner has manual dexterity issues, poor eyesight Increased dosing accuracy

16 Useful Support Items Diabetes Training for Pet Owners download from under Support Materials or order hard copy from your MSD Area Manager Diabetes in Cats/Dogs Owner Manual Diabetes Owner Website VetPen Instructional DVD Injection Training

17 Stabilisation of Diabetes Mellitus Initial Caninsulin Treatment: iu/kg for small dogs** (<10kg)* iu/kg for larger dogs* - 1 iu twice daily for cats with BG <20mmol/l - 2iu twice daily for cats with BG >20mmol/l *1/3 dogs stabilise on once daily ** Terriers

18 Setting Realistic Expectations: Treatment stages Diagnosis Stabilisation 3 Months Monitoring Maintenance

19 Blood Glucose Curve Protocol First blood sample after morning meal and prior to insulin injection Subsequent blood samples at least every 2 hours for at least 8-12 hours Plot blood glucose concentrations against time Nadir is variable (4-7 hours typically) Blood glucose (mmol/l) Onset of action Glucose nadir BASELINE Time post insulin Duration of action Insulin administered

20 Stabilisation of Diabetes Mellitus MAINTAIN INITIAL DOSE (UNCHANGED) FOR 7-21 DAYS This will allow time for the animal s blood glucose levels to reach a steady state. Do not alter the dose more frequently than every 3 days in dogs and 7 days in cats. Establish owner routine.

21 Further stabilisation clinic consult Every 7-21 days until stable Look at the animal! Appearance of the animal Weight Monitor water intake Diabetic diaries (at home) Monitor blood glucose blood glucose curve Other tests Urine glucose (at home) Fructosamine Look at the animal!

22 Blood Glucose Curves If clinical signs and the blood glucose curve suggest the dose is insufficient then increase by 10% for dogs and by 0.5-1iu for cats and small dogs (<10 kg) Reassess in 7 days (no earlier than 3 days in dogs) Repeat these steps until there is resolution in clinical signs ie no longer Pu/Pd Do not be tempted to chase the numbers for the ideal BG curve!!

23 Unstable Diabetics 1) poor insulin storage & administration 2) underlying disease- UTI, Dental Disease, In season, cushings 3) Inconsistent diet Inconsistent activity IN CATS? ACROMEGALY OR REMISSION

24 Somogyi Overswing Good control Somogyi effect 30 Blood glucose (mmol/l) am 11am 1pm 3pm 5pm 7pm 9pm 11pm 1am 3am 5am 7am 9am Time

25 Long Term Monitoring clinics Every 3 months: Monitor -weight -thirst/water intake -demeanour -appetite

26 Key points regarding Caninsulin BID use offers superior BG control Maintenance dose typically <1IU per Kg per dose Average is IU per kg per dose Investigation warranted if using >1IU per kg and little response Nadir usually 4-7 hours post injection (variable in each patient)

27 Home Blood Glucose Monitoring The future for pet diabetes management

28 Urine Glucose and Ketone Monitoring Easy, painless, inexpensive Negative when diabetes is well controlled Fluctuates substantially with stress, concurrent illness, change in activity level and overeating Serious limitations More useful in dogs than in cats

29 Limitations of Urine Monitoring Time lag between the blood glucose and urine glucose levels Reflect average blood glucose levels in the preceding period Should not be used to try to achieve regulation Do not show if blood glucose was too low Inaccuracy exaggerated in animals that urinate infrequently Reflect average blood glucose concentration over a longer period Can be used once animal stable to check for glucose spilling over into urine

30 Which factors increase the treatment success of a diabetic pet? Insulin Consistent routine Feeding Exercise Regular monitoring DEDICATED WELL-EDUCATED OWNER

31 Factors to consider in the uncontrolled Diabetic Dose delivery Owner compliance Concurrent problems Other medications Stress response Feeding regime Remission If in doubt, reduce the dose and re-evaluate